Ok here we go again. I had the jitter problem 0n another plane not long ago. Turned out to either be metal to metal on the throttle or antenna inside fuse. Anyway I have another one jumping. Engine not running turn tx and rx on and they start jumping around badly. (4) JR 125mg on ailerons and elevator (1) JR126mg on rudder (1) Hitec 425 on throttle, battery 2700mah 6V , mpi switch. I checked everything for metal to metal and nothing, antenna outside of fuse. I have tried (2) switches (2) rx's, Ner 549-X, RS600 (2) batteries both 2700mah 6V. Any suggestions